Source-reviewed guide
Valheim Patch Notes: 1.0 Release Through 1.0.20
Official-source summaries of Valheim 1.0 through patch 1.0.20, including Deep North balance, world saves, achievements, servers, and platform notes.
Reviewed 2026-10-25
Valheim 1.0 launched on September 9, 2026. The current entry in this archive is 1.0.20, released October 15. Each summary separates player-facing changes from the backup, update, and recovery steps that matter to an existing world or dedicated server.
Patch entries
Entries are ordered by release date descending, then version descending when release dates tie. The Updated column records the latest editorial review.
| Entry | Released | Updated | Announced scope |
|---|---|---|---|
| 1.0.20 | 2026-10-15 | 2026-10-25 | All platforms; initial Mac App Store delay |
| 1.0.17 | 2026-10-06 | 2026-10-25 | All platforms; staggered rollout |
| 1.0.16 | 2026-09-25 | 2026-10-25 | All platforms; staggered rollout |
| 1.0.15 | 2026-09-18 | 2026-10-25 | All platforms; staggered rollout |
| 1.0.14 | 2026-09-17 | 2026-10-25 | All platforms; staggered rollout |
| 1.0.12 | 2026-09-11 | 2026-09-17 | Steam only; crossplay compatible |
| 1.0.10 | 2026-09-11 | 2026-09-17 | All platforms; Xbox label 1.0.11 |
| 1.0 release | 2026-09-09 | 2026-09-17 | Full release across supported platforms |
Reading these summaries
Entries distinguish announced fixes from server-owner checks. Read 1.0.15 before attempting to recover upgrade levels lost during the original save-format conversion, and 1.0.17 before running an older persistent world. Mod compatibility remains dependent on individual mods.
Sources: Official 1.0 patch notes, September 11 hotfix, 1.0.14, 1.0.15, 1.0.16, 1.0.17, and 1.0.20.